I've seen these available before. My guess is that it's the OEM version of the DHA-S690, much like the CD Changer is basically a CHA-S614 or CHA-S634 for the MP3 version. No idea how well integrated it is.

The Intravee support for the DHA-S690 is improving but it's still not there. I have to mess about on power up at the moment, but once it's going it's OK.